Tool for use in filing swaged saw-teeth.



J. F. ERLEI.

TOOL FOR USE IN FILING SWAGED SAW TEETH.

APPLICATION FILED MAY 28, 1914.

1 ,141 ,45 1 Patented June 1, 1915.

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mmnubllm JOSEPH F. ERLEI, 0F MILAN, WISCONSIN.

TOOL FOR USE IN FILING SWAGED SAW-TEETH.

Application filed May 28, 1914.

To all whom it may concern:

Be it known that I, JOSEPH F. ERLEI, citizen of the United States, residing at Milan, in the county of Marathon and State of Wisconsin, have invented certain new and useful Improvements in Tools for Use in Filing Swaged Saw-Teeth, of which the following is a specification.

This invention is a device for use in filing swaged'saw-teeth and has for its object the provision of an inexpensive gage which may be readily placed upon a saw and engage the teeth of the same in such manner that the sides ofthe saw-teeth may be filed to a uniform degree and thereby enabled to cut a uniform kerf.

The invention also seeks to provide a device which may be applied to either side of the saw-teeth and which, when in its operative position, will furnish a positive guide for the file so that the surplus metal on the sides of the saw-teeth may be readily re moved.

Other objects of the invention will appear as the description of the same proceeds, and

the invention consists in certain novel features which will be first fully described and then more particularly pointed out in the claims following the description.

In the accompanying drawings,Figure 1 is a plan view of my improved tool showing it in' its operative position; Fig. 2 is an edge view of the tool; Fig. 3 is a detail wardly toprovide a foot or platform 5 upon whichthe gage 6 is secured. The said gage is secured upon the foot or platform 5 by a bolt 7 so that should the gage become worn through long continued use it may be easily removed and a new gage substituted therefor. It will be understood, however, that the gage is made of very hard steel so that the file employed to operate upon thesawteeth will have .very little elfectupon the gage which may, consequently, be used for 5 a very long'period. The inner endof the gage is shaped to fit closely against the Specification of Letters Patent.

Patented June 1, 1915.

Serial No. 841,652.

down-turned portion 4 of the main support, as shown at 8, and the sides of the gage preferably project beyond the sides of the foot or platform 5, as shown at 9. Between the inner extremity of the gage and each side of the same I form a V-shaped recess 10 which is adapted to receive the saw-teeth, and at the outer end or apex of each of the said recesses is a substantiallyrcircular enlargement or socket 11 which receives the swaged extremity of the saw-tooth. The upper surface of the gage is beveled downwardly toward each side from its central longitudinal line 12, and upon these beveled upper surfaces of the gage I form walls 13 extending diagonally across the gage and intercepting the respective recesses 10 between the inner open ends of the same and the circular enlargements or sockets 11 at the outer ends thereof. As shown most clearly at 14: in Fig. 2, the beveled surfaces of the gage extend downwardly from the outer end thereof to the walls 13 so that a file, indicated at 15 in Fig. 1, supported upon either of said beveled surfaces will extend across the side of the saw-tooth fitted in the recess 10 and the socket 11 intercepting said surface and, consequently, will be in a position to positively cut away the excess material upon the saw-tooth. A set-screw 16 is mounted in the main bar or support 1 and equipped with a lock-nut 17 so that by adjusting the set-screw and then turning home the lock-nut the device may be arranged to permit more or less of the side surface of the saw-tooth to project above the gage and, consequently, the filing of the tooth may be effectively gaged.

It is thought the manner of using my device and the advantages of the same will be readily understood from the foregoing description taken in connection with the accompanying drawings. The saw is placed in ahorizontal position upon some firm support such as a work-bench or table, and my improved tool is then placed upon the upper face of the saw, as indicated in Fig. l, the lugs 3 and the end of the set-screw 16 resting upon the saw and the downturned portion 4 of the main member of the tool passing through the space between the adjacent saw-teeth. This disposition of the tool will bring one saw-tooth into a recess 10 with p is then placed over the saw-tooth with its inneredge resting against the adjacent diag onal wall 13 and then manipulated in an obvious manner to reduce the lateral pro tuberance on the tooth. When all that portion of one tooth member that projects above the surface of the gage has been cut away the tool is shifted relatively to the saw so as to engage the next tooth, which is then treated in the same manner. have been treated upon the one side, the saw is reversed and the teeth treated on their opposite sides in the same manner. It will be readily understood that when the saw is reversed the teeth will extend in directions following lines having an angular relation to the lines of direction previously followed by the teeth, and this condition is accommodated in my tool by providing the recesses 10 at both sides of the longitudinal center of the gage so that'when the saw is reversed the teeth may be engaged by that recess which was previously inactive.

If the set-screw 16 be adjusted so that the distance to which it projects below. the main bar 1 be increased, the outer end of the said bar will be raised relative to the saw-blade inasmuch as the bar will then be'practically rocked-upon its supports 3. The upper surface of the gage will thus be brought closer to the upper surface of the saw and, consequently, less material will be cut away from the side of the saw before the file will bear directly upon the surface of'the gage. If the set-screw be adjusted in the opposite direction the gage will be lowered relative to the saw and, consequently,a greater quantity of material may be removed from the side of the teeth. 7

It will thus be seen that I have provided a very simple tool which may be easily applied to any saw and which will furnish a positive gage whereby all the teeth of a saw may be reduced to'the same width and, consequently, the kerf formed by each tooth of the saw after it has been treated will be'the same as the kerf formed by every other tooth V of the saw and the operation of the saw rendered less difiicult and more satisfactory.

Upon reference to Fig. 1, 1t will be noted that each diagonal wall 13 extends from a side edge of the gage inwardly across the central longitudinal ridge thereof to the down turned portion of the support, the two diagonal walls intersecting at the ridge. As the upper surface of the gage is beveled, the

outer portion of each wall is deeper than the inner portion of the same but the'inner extremity of each wall, in rear of the point of intersection, is'higher than the other'wall at and immediately in advance of the point of intersection. When the file is in operative position, as'indicated in Fig. 1, its inner edge bears against a diagonal wall throughout the entire length of its stroke, and said wall After all the teeth.

formsa guide for the file at both sidesof the recess which embraces the saw tooth. As the V intersecting Wall, immediately in advance 7 of the point of intersection, does not project above the ridge of the'gage, it will not present an obstruction to the movement of the file nor tend to lift it from the tooth. As the outer closed end of the recess is in advance ofthe guide wall, the plane of which passes across the recess, a file resting upon the gage and against the wall "will bear squarely against the side of thesaw tooth, Having thus described my invention, what I claim is; i a r 1. A device for the purpose set forth comprising a supporting member adapted torest 1 upon a saw, and a gage carried by said supporting member and. provided with a recess to receive a tooth of the saw and also provided'with a guide'at each side of the said recess and in rear of the outer end of the same for a saw-tooth-treating tool.

2. A device for the purpose set forth comprising'a main supportingimember, and a gage carried thereby, said gage being provided witha recess adapted to receive a sawtooth and having 'uide walls rising from its upper surface and 8. A device for the purpose set forth com prising a main supporting member, and a gage carried by said member, said gage being provided adjacent its inner end with a intersecting the said recess. a

V-shaped recess to embrace a saw-tooth, and

having a beveled upper surface and a guide wall rising from saidsurface at both sides of the recess atan angle thereto in rear of the outer endof the same. i

4. A'devicefor the purpose set forth com-' and with diagonally disposed guide walls at the oppositesides of each of said recesses and at an angle thereto and in rear of the outer end thereof. e

5. Adevice for the purpose set forth comprising a main supporting member, a plat form carried by said member and arranged to form a rest'for a saw tooth, and a gage secured on said platformand provided adjacent the main supporting member at opposite sides of its medial longitudinal line with V-shaped recesses, each adapted at times to engage a saw tooth resting on the platform, the upper surface of the gage being beveled downwardly from its medial longitudinal disposed line to its sides, and diagonally ed onsaid vertical guide walls being provi turned portion, and a gage arranged upon the upper side of said platform adapted to ingage the saw tooth resting on the platorm.

In testimony whereof I affix my signature 15 in presence of two Witnesses.

JOSEPH F. ERLEI. [L. s] Witnesses:

MARTIN ELLINesoN, CLARENCE BERG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

